Traveling crane



A. E. MOORE TRAVELING CRANE E'ild May 29, 1928 Patented May 13, 1930 FOFFICE.

ALFRED E. MOORE, or WINSTED, CONNECTICUT- TRAVELING CRANE Applicationfiled May 29,

- invention, among others, is the production of a device of thissortthat shall be simple in construction, strong and durable, andparticularly efficient in operation. 7

One form of crane embodying my invention and in the construction and useof which the objects herein set out, as well as others, may be attained,is illustrated in the accompanying drawings, in which-- Figure l is aview illustrating a traveling crane embodying my invention.

Figure 2 is a view of one of the supporting sides of the crane withparts broken away to illustrate my improved device.

Figure 3 is a top view of the same. Figure 4 is a detail viewillustrating a load carrier containing my improvement.

My invention is adapted for use in different types of apparatus, andparticularly in cranes, the device being illustrated herein as appliedto a traveling part of a crane and also for the purpose of receiving ahoist, but it will be understood that the invention is not confined tothe application shown, but may be used in different ways. In theaccompanying drawings the numeral 5 indicates a supporting rail or beamof common and ordinary form on which traveling hoists are commonlysupported, this beam having a traction flange 6 forming a track alongwhich the structure travels.

The structure is in fact a carrier, and it comprises a frame composed oftwo sides of similar construction. Each of these sides includes a hub 7having a stud 8 projecting laterally therefrom to support a tractionroller or wheel 9 that isrotatably mounted on said stud. The hub '7 islocated at the upper part of the structure and substantially on a linepassing vertically centrally between the ends, and on each side of thiscenter line are extensions each comprising a pair of ears 10, each pairof ears supporting between them a guide roller 11. The axes of thetraction wheels 9 and of the rollers 11 are arranged transverse one toanother. Each roller 11 has a support- 1928. Serial No. 281,520.

ing flange 12 and the bodies of the rollers travel in position tocontact with the edges of the flanges 6, when occasion requires, whilethe flanges 12 of the rollers are adapted-to contact withthe uppersurface of said flanges under certain conditions. The traction wheels orrollers 9 travel along the upper surfaces of said flange 6 andordinarily comprise the sole support for the carrier, but when abnormalconditions arise whereby there is a tendency for tipping action thebodies of the rollers or the flanges thereof will act as a support toprevent such tipping,

while at the same timepermitting easy running movement of the loadcarrier along its support. The rollers 11 are each supported upon pins13 extending through the' ears' l0 and are removably held therein inany-suitable manner, cotter pins being shown'herein for this purpose. yI Each frame also comprises a load support 14- in the form of a downwardextension substantially in vertical alignment with the hub 7, so thateach side is of cruciform shape. a

A bolt 15 extends through the lower ends of the supports 14, thusuniting the two sides comprising each frame, and this bolt may alsocomprise the supportfor a device towhich a hoisting mechanism may beattached in a manner common to structures of this class.

Thewheels 9 may be supplied with any suitable form of antifrictiondevice, as roller bearings 16. The structure is one of extremesimplicity comprising merely a pair ofsupporting wheels 9 locatedsubstantially in the vertical center of the supporting frame andgenerally supporting the entire load, but with a pair of guide rollersmounted in each side of the frame, not to support any material part ofthe weight but simply to actas guides to prevent vertical tipping actionof the frame or sidewise cramping action thereof. 1

As one other adaptation of my improved device I have shown it applied tothe ends of thesupporting rail 5 which is subject to lateral forcescausing tipping or cramping actions. In this arrangement the frame issubstantially the same as hereinbefore detrue only one :ofthe sides ofthe frame are employed at each end of the rail 5. As a matter of fact,however, the entire frame is used with the sides reversed from flthestruoture comprised in the load carrier, and the bolt hereinbeforereferred to is in the form of the rail 5 which joins the two sidesof theframe.

In accordance with the provisions of the patent statutes I havedescribed the principles of operationofmy invention, together wit'h thedevice which I now consider to rep resent the best embodiment thereof;but I desire to have it understood that the device shown is onlyillustrative and that the invention may be carried out by other meansand applied to uses other than those above set out.

I claim 7 V 1. A crane structure including a carrier composed of anelongated load supporting member, a right angularly arranged frameconnected to an end of the load supporting member to projectlongitudinally therebeyond, a traction wheel connected to the framebeyond the end of the load supporting memberand with its axis ofrotation above the longitudinal axisofsaid member, and means carried bytheframe on the opposite sides of said wheel and below the longitudinalaxis of the said member forpermitting only slight pivotal movement ofthemember about the axis of rotation of the traction Wheel.

2., A; crane structure including a carrier composed of' an elongatedload supporting member, a frame connected to. an end of said member, aWheel supporting stud connected to said frame directly above thelongitudinal axis of said member, a wheel on said stud to travel on asupporting rail and means carried by the structure on opposite sides ofa plane passing vertically and longitudinally through the member and thestud to engage a supporting rail only after slight pivotal movement ofthemember about the axis of the stud for preventing further such pivotalmovement 3; A crane structure including a carrier composed of" anelongated load supporting member, a frame connected to an end of saidmember, a wheel supporting stud connected to said frame directly abovethe longitudinnal axis ofsaid member, a wheel on said stud to travel ona supporting rail, and flanged rollers journaled on the frame onopposite sides. of a plane passing vertically and longitudinally throughthe member and the stud to engage the rail only after slight pivotalmovement of the member about the axis of the stud. 4%. A crane structureincluding a movable supporting member, means at each end of saidsupporting member for movably mounting it upon supporting rails, each ofsaid means including a frame secured to and projecting from an end ofsaid member, a traction wheel journaled on the frame and having an axisof rotation positioned above the longitudinal axis of said supportingmember, and means on opposite sides of the traction Wheel for permittingonly slight pivotal movement of said member about the axis of rotationof the traction Wheel; and a carrier mounted upon said supportingmember.

5-. A load carrier including a frame having lateral extensions, asupporting roller mounted on a stud in the vertical center line of saidframe to travel on a supporting member, and a guide roller at the outerend of each lateral extension to permit but limited'pivotal movement ofthe frame with respect to. said mem- ALFRED E. MOORE.

